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1 Volume 4 Issue 2 May 2015 AVERA (Association of Electrical and Electronics Engineering) From the Editorial ENGINEERING An art well known to mankind, that came in to existence since ancient times, a solution to the present problems faced by mankind, a powerful complicated art that emerged into this world and achieved a name familiar to even the common man. ‖ENGINEERING‖. One of the oldest platform in ENGINEERING ―ELECTRICAL ENGINEERING‖. Be proud to be an ―ELECTRICAL ENGINEER‖. LAUNCHING OF 2015 WITH RAINBOW COLOURS The present year 2015 has witnessed tremendous achievements on the side of the students belonging to EEE department. More than 90 final year students of EEE department has been placed in various companies. This has been a remarkable achievement that has to be appreciated. The department has conducted intra department workshop, guest lecture, and few quiz contents that has benefited several students. Several outside students had come to take part in the symposium held by MCET that happened for 2 days. The volunteers played a main role in making the symposium a great success. 1 2 GUEST LECTURE ON“ELECTRIC AND HYBRID VEHICLES”. Mr.S.Karthik ,Manager R & D , Ampere Vehicles, India Ptv Ltd ,Coimbatore. The guest lecture was conducted for II year students of EEE department . The guest lecture continued for more than 2 hours. The contents discussed during the session were - an introduction on the electric and hybrid vehicles , how it remains unique when compared to the other vehicles, a detailed information on how to manufacture such a vehicle , and also the benefits of using such vehicles. The session was very interesting and the session was able to impart knowledge to the students on how to manufacture such vehicles. A hybrid vehicle is a vehicle that uses two or more distinct power sources to move the vehicle.[1] The term most commonly refers to hybrid electric vehicles (HEVs), which combine an internal combustion engine and one or more electric motors. However, other mechanisms to capture and use energy may also be included. Any vehicle that combines two or more sources of power that can directly or indirectly provide propulsion power is a hybrid. Advanced technologies typically used by hybrids are: Regenerative Braking. The electric motor applies resistance to the drive train causing the wheels to slow down. . In return, the energy from the wheels turns the motor, which functions as a generator, converting energy normally wasted during coasting and braking into electricity, which is stored in a battery until needed by the electric motor. Electric Assist. Motor Drive/ The electric motor provides additional power to assist the engine in accelerating, passing, or hill climbing. This allows a smaller, more efficient engine to be used. In some vehicles, the motor alone provides power for low-speed driving conditions where internal combustion engines are least efficient. The guest lecture on ―Electric and Hybrid vehicles ― was given by 2 3 TECHNICAL QUIZ An intra-department technical quiz was conducted by AVERA association for IIyears on 02.03.2015. About 55 students participated in the preliminary round from which 16 students were qualified for the first round. The participants were split up into teams comprising of 2 per team and were asked to choose questions from a particular domain. By the end of first round there was a tie breaker among 9 teams. The teams were about to answer the questions, by which 5 teams were qualified for the finals. In the final round each team were supposed to design a circuit for alternate glowing of LED‘s with reversal voltage and based upon time constrain and the accuracy of the circuit, WINNERS were announced. The same task was given to the audience and the best circuits were selected and they were awarded with BEST CIRCUIT DESIGNER title. The event was monitored by Mr.A.SenthilKumar , AP (SS) along with the staff coordinators of AVERA Ms.J.Amudha AP(SG) and Mr.SaravanaKumar (AP). The Event was held at ELECTRICAL SEMINAR HALL in ‗C‘ block from 11.00A.M to1.05 P.M. Two teams were selected as winners. MCET’S GRAND TECHSYM During the big event of the year ―THE TECHSYM—2015‖ the events that were conducted by the EEE department were –Paper Presentation, Project Presentation, Technical Quiz, All Terrain Robots and Robo soccer. The field events All Terrain Robots and Robo Soccer were conducted in a grand manner. Among all the departments of the techysm the field event ―ROBO SOCCER‖ was awarded as the best event of all the event conducted in Techsym. ALL TERRAIN ROBOTS 3 4 ROBO SOCCER 4 5 5 6 STUDENT’S ACTIVITIES IN THE MONTH OF JANUARY PAPER PRESENTATION S.No Student’s Name Year and Department Title of Paper Presented B.Surendra Prasad 1 S.Udaya Shankar III BE EEE INDO-ASIAN SOLAR CHALLENGE K.Saravanakumar Organizer and Place of program International Level Solar Vehicle Fabrication Event Date 3-01-2015 18th place of 100 teams,LPU Punjab R.TamilVannan 2 S.Sarath II BE EEE Power Generation Using Biomass CIT,CBE 24-01-2015 II BE EEE Power Generation using Piezoelectric Material and Dynamo CIT,CBE 24-01-2015 II BE EEE Renewable energy & Application CIT,CBE 24-01-2015 III BE EEE Nano Technology KSR,Karur 30-01-2015 M.Ashok Kumar 3 4 K.Gokul M.Manivel Arun.K.Sanjeev K.Arun Kumar M.Chitra 5 Chandana S.Pavithra In-Plant Training by the Students S.No Student’s Name Year and Department Place of In-plant Training Period of Training (Date(s)) 29-12-2014 1 2 R.Mukesh Krishna II BE EEE K.Keerthiga II BE EEE Steel Authority of India ltd To 3-01-2015 Sugar Mill, Mohanur, Namakkal 6 2-01-15 to 05-01015 7 Extra-Curricular / Co-curricular Activities S.No 1 2 Students Name D.Shalini Year and Department III BE EEE N.Valli Pavithra Awards / Medals Events Details III Inter Zonal Tournament Date of the Event 24-01-2015 To 25-01-2015 K.Keerthiga III BE EEE Runners Interzonal Cricket 23-01-2015 To 25-01-2015 Participation of Inter and Intra Collegiate S.No 1 Student’s Name Z.Khalidha Banu Details of event & Prize if any Organizer and Place of program Date II BE EEE Hopefest-A talkshow organized by GKNM hospital for promoting cancer awareness G.Kuppusamy Naidu Hospital 8-02-2015 II BE EEE ROBO Race Kongu Engineering College 4-02-2015 Year and Department M.Guna 2 P.Gowtham R.Narendra Prasad S.Sathish IN THE MONTH OF FEBRUARY Extra-Curricular / Co-curricular Activities S.No 1 Students Name R.Harish Branch and Department III BE EEE Events Details Awards / Medals TN-TIES Participated Basket Ball 7 Date of the Event 6-02-2015 & 09-02-2015 8 PAPER PRESENTATION S.No Student’s Name R.Siva prasad 1 M.Sivabalakrishnan A.Senthil Kumar 2 M.Murugan E.Sandhya 3 K.Poorani D.Anusya 4 K.S.Jeevitha M.Ashok Kumar.M 5 T.D.Om Prakash Keerthana.K 6 Anisha Nazrin R.Dhivya 7 Branch and Department Title of Paper Presented Organizer and Place of program Date II BE EEE Automatic AC shut down in car using Embedded SKCET,CBE 20-02-2015 II BE EEE 3D Printing Technology Angel College of Engineering & Tech 20-02-2015 II BE EEE Carbon Solar panels to harness infrared radiation SKCET CBE 20-02-2015 II BE EEE 5G Technology Hindusthan College of Engg & Tech 26-02-2015 II BE EEE Charging on Electric Car using Dyanamo SKCET,CBE 06-02-2015 III BE EEE Nano Leaves-A Future Renewable Energy Sources Kongu Engineering College 21-02-2015 III BE EEE Automatic File Tranfer Using PIC Kongu Engineering College 20-02-2015 NSS ACTIVITIES S.NO Name of the Students Branch and Department Programmes Organized / Conducted / Participated Venue Date (s) R.Gayathri J.Shalini 18-02-2015, P.S.Pradeepa 19-02-2015, Guna.M 1 P.Indhumathi II BE EEE NSS Camp S.Vishnu priya R.S.Srilekha S.Vigneswaran Sabari Alagar 8 Kanjampatti 24-02-2015 9 Awards – Academic Name of the Student Year and Degree Branch Name of the Award Awarded by (Name of the Organization) Purpose of Award Date of Awarded Nishanth.S IV BE EEE R.Thiruvenkadam Scholarship MCET Best Outgoing student-EEE 25-02-2015 Gayathri.S IV BE EEE Proficiency Award MCET FIRST RANK 25-02-2015 B.Sudhakaran III BE EEE Proficiency Award MCET FIRST RANK 25-02-2015 K.B.Suganya II BE EEE Proficiency Award MCET FIRST RANK 25-02-2015 Om Prakash.T.D II BE EEE Proficiency Award MCET FIRST RANK 25-02-2015 Kalaiselvi.S ME AE Proficiency Award MCET FIRST RANK 25-02-2015 Surendra Prasad.B III BE EEE Acheivement Honour Award MCET Excellent performance 25-02-2015 Muruganatham.M Jegadiss.R Thangavel.M Karuppana Kumar.S Nagaarjun.D Name and Address of Important Visitors S. No Name of the Visitors Mr.S.Karthick 1 Manager R & D Purpose Date of Visit Guest Lecture on ―Electric & Hybrid Vehicle‖ 12-02-2015 Ampere Vehicle India PVT Ltd Coimbatore 9 10 YRC / RRC Activities Name of the Students Degree Studying Branch Programmes Organized / Conducted / Participated Venue BE II EEE Awareness rally on organ and Blood donation Pollachi Date (s) R.Siva Prasad M.Sivabalakrish nan C.NaveenSelva kumar G.Bhuvanesh M.Shriram 10 19-02-2015 11 FLYING WINDMILL AND HYDROGEN FUEL GENERATION This article is about the conversion of surplus electrical energy into the hydrogen fuel and flying wind mill . obtained. The oxygen will be released to the environment and hydrogen enters into the next stage of storing. As it is difficult to store hydrogen we use a polymer called Plexiglas. This polymer will store an hydrogen and this can be used as a fuel to drive a car. NEED FOR THE ABOVE PROPOSED IDEA: Nowadays, there is a scarcity of petrol and other types of fossil fuels. So, here there is a technique of production of hydrogen fuel which can be used to drive a vehicle. In addition to the above method we are going to implement the technique of flying wind mill . These flying windmill consists of a turbine and the balloon/kite. The turbine will be carried by the balloon/kite and is made to fly above certain height .As the height increases the velocity of wind increases, based on that the turbine will rotate at greater velocity at certain height. The power generated in that turbine will be transmitted down using an Nano cables . As Nano cables are so strong we employed that here for higher efficiency. It can be noted that the power generated using flying turbine is 8-27 times greater than that of the ordinary windmill. Hydrogen fuel is a safe and ecofriendly type of fuel used in automobiles. Future generation are waiting to welcome the invention of hydrogen powered vehicle. WORKING: The following method is to produce hydrogen from wing energy. In wind power generation, storage of generated electricity is one of the difficult task. Technological improvements are needed for efficient storage of wind power.it is not possible to store the excess electricity in case of wind power generation. We have to use the surplus electricity in the efficient manner. Here comes the technique of producing hydrogen by electrolysis method. Surplus electricity is made to pass through the Water (H2O), as electricity is passed through it ,water electrolyzed into hydrogen(H2) and oxygen (O2).Thus the byproduct hydrogen and oxygen is Thus, both techniques are going to implement in the same wind farm for high output and to get valuable by-product without any wastage. - M.ASHOK KUMAR (SECOND EEE) 11 12 Practical Approaches To Minimize Voltage Drop Problems The NEC states in an Informa- uncommon to find conductor gauges connected to a single circuit will limit tional Note that a maximum volt- for phase, neutral, and ground exceed- the load current on the circuit. Limit age drop of 3% for branch circuit ing Code minimums, and a sepa- the conductors, and 5% for feeder rate branch circuit installed for each each branch and branch circuit conductors large or sensitive load. To limit neutral- six.Install individual branch circuits together, will provide reasonable to-ground voltage drop, install a sepa- to sensitive electronic loads or loads efficiency of operation for gen- rate, full-sized neutral conductor for with a high inrush current..For residen- eral use circuits. For sensitive each phase conductor in single-phase tial applications, install out door recep- electronic loads, circuits should branch circuit applications. For three- tacles not to exceed 50 linear feet be- be designed for a maximum of phase feeder circuits, do not downsize tween receptacles, with a minimum of 1.5% voltage drop for branch the grounded conductor or neutral. one outdoor receptacle on each side of number of receptacles circuit to three on to circuits at full load, and 2.5% the house, and with individual branch voltage drop for feeder and circuits with a minimum of 12 AWG to branch circuits combined at full each receptacle. load. Four practical approaches 3..Decrease Conductor can be used to minimize voltage This reduces the drop problems: the conductor, which reduces voltage 1.Increasing the number or size drop. Circuit lengths are usually fixed, of conductors. but some control can be exercised at 2.Reducing the load current on the design stage if panels or subpanels the circuit. are located as close as possible to the 3.Decreasing conductor length. loads, especially for sensitive elec- 4.Decreasing conductor tempera- tronic ture. 4. Adjust Conductor Temperature: 1. Increase the Number or Size of Parallel or oversized conduc- For three-phase circuits where significant tors have lower non-linear per loads are anticipated, it Code- is recommended to install grounded or required minimum-sized conduc- neutral conductors with at least double the tors, reducing voltage drop and Ampacity of each phase conductor. unit length than the lower losses than using the Code- 2.Decrease required minimum-sized Limiting: ductor. In data centers and other of equipment. Load tor in conductor resistance, and therefore in voltage drop. The temperature coefficient of electrical resistance for copper, α,about 0.3% for each °C of temperature change. The effect of temperature can be determined by the increasing energy efficiency with con- resistance Conductor temperature is a major fac- Conductors. resistance Length Current following equation: R 2 = R1 [1 + α · (T2 – T1)] The amount of equipment that can be sensitive installations, it is not - M.ARUN (SECOND EEE) 12 13 Why it’s important to know which type of power factor correction to use 1. Distributed power factor cor- self- excite with the reactive energy drawn It consists in improving locally the rection from the capacitor bank, and may turn into power factor of groups of loads an asynchronous generator. In this case, having similar functioning charac- the voltage on the load side of the switch- teristics by installing a dedicated ing and control device is maintained, with capacitor bank. Distributed power factor correction is achieved by connecting a capacitor bank properly sized directly to the terminals of the load which demands reactive power. The installation is simple and inexpensive. Capacitor and load can use the same protective devices against overcurrents and are connected and disconnected simultaneously.This type of power with constant advisable in the case of large electrical equipment load and power and long the risk of dangerous overvoltage (up to twice the rated voltage value). When using diagram 3, the compensation bank is connected only after the motor has been started and disconnected in advance with respect to the switching off of the motor supply. With this type of power factor correction the network on the supply side of the load works with a high power factor; on the other hand, this solution results economically onerous. connection times and it is gen- This is the method reaching a compromise between the inexpensive solution and the proper management of the installation since the benefits deriving from power factor correction shall be felt only by the line upstream the point where the capacitor bank is located. 3. Centralized power factor correction: These assemblies are normally erally used for motors and fluo- used with banks divided into rescent lamps. steps, installed directly in the main In case of direct connection distribution boards. The use of a (diagrams 1 and 2), the follow- permanently connected bank is ing risk may be run: after the possible only if the absorption of disconnection from the supply, the motor will continue to rotate reactive energy is quite constant all (residual kinetic energy) and day long. 13 14 4. Automatic power factor correction In most installations there is not a constant absorption of reactive power for example due to working cycles 2.An intelligent unit which comAn automatic compensation system pares the measured power factor is formed by: with the desired one and operates 1.Some sensors detecting current and voltage signals; the connection and disconnection of the capacitor banks with the nec- for which machines with different essary reactive power (power factor electrical characteristics are used.In regulator); 3..An electric power board com- such installations there are systems prising switching and protection for automatic power factor correc- devices; tion which,thanks to a monitoring 4.Some capacitor banks. To varmetric device and a power fac- supply a power as near as possible tor regulator, allow the automatic to the demanded one, the connec- switching of different capacitor tion of the capacitors is implement- banks, thus following the variations ed step by step with a control accuracy which will be the greater the of the absorbed reactive power and more steps are foreseen and the keeping constant the power factor of smaller the difference is between the installation constant. them. - S.VIGNESWARAN(SECOND EEE) Basic Transformer Routine Test – Measurement of Winding Resistances Purpose of the measurement correctly connected. current Idc an by the re- The resistance between all pairs of Apparatus and basic measuring circuit sistance RAB, RACand RBC is phase terminals of each transformer The performed measured.The resistances are then winding are measured using direct cur- by TETTEX 2285 transformer test calculated from U dc and Idc using rent. correspond- system.This device is an automatic correction for the error caused by ing winding temperature is measured. winding analyzer, optimized for the internal resistance of the volt- The measured resistances are needed in three phase power and distribution age measuring equipment.The tem- connection with the load loss measure transformer measurements. perature is measured from oil filled connection with the load loss measure- Where:T1 - transformer under test, thermometer pockets situated in the ment when the load losses are correct- A – Ammeter, U – Voltmeter transformer cover by means of an ed to correspond to the reference tem- B – DC supply, Th - Thermometer electronic thermometer connected perature.The resistance measurement The principle of themeaurement is to the computer. will also show whether the winding as follows:The voltage drop joints are in order and the windings Udc caused by the direct Furthermore the measurement is R- MUKESH KRISHNA (SECOND EEE) 14 15 Selection of Induction Motors for Industrial Applications All types of industries are invaria- Moreover, the motors are required to 1. Abnormal System Conditions Voltage bly required to install different perform quite 1. Undervoltage types of electric motors as prime mal conditions during curtailments Like 2. Overvoltage mover for driving process equip- one mentioned above, a number of other 3. Unbalance in 3-phase ment participating in their respec- factors and design features like weather 4. Single phasing Voltage surges tive production line up. The con- conditions, tinuous process of technical devel- tions, abnormal surroundings, hazardous opment has resulted into availabil- area, duty cycle, motor efficiency, etc. ity of highly diversified types of should be considered while deciding the often under abnor- stringent system condi- care should be exercised in selec- 2.Reswitching/Frequent start-stops. factors for each application, so 3.Momentary interruption/Bus that the motor would motor con- transfer sidering number of technical pro- 3. Environmental conditions vide desired and optimum perfor- 1.Overloading mance. The characteristics of mo- 2.Improper cable sizing tors stops, etc. should be taken 3.High/low ambienttemperature In view of 4.High altitude above, an incorrect selection industrial buyer into all sorts of problems, includ- ing premature failure of the motor, causing severe production into consideration carefully when deciding for the type 2.High frequency 1.Locked rotor or stalled rotor tion of most appropriate type of of motor always lands the 1.Low frequency 2. Abnormal Operating conditions electric motors.Hence, an utmost their total service life. Frequency rating and subsequently drawing out the technical specifications of the mo- 5.High humidity 6.Corrosive atmosphere 7.Hazardous atmosphere/ tor. Abnormal conditions and effects: The usual abnormal conditions encountered by the motors are given below. of a motor for that specific application. 15 surroundings 8.Exposure to steam/salt-laden air/ oil vapour 16 4. Mechanical problems Leading to: Seized bearings , Incorrect alignment/ Shearing of shafts ,Damage to wind- foundation levelling , Incorrect fixing of ing overhang, Bearing failures, Insu- coupling lation failures. Increase in stator and ,High vibration mounting External shock due to load rotor winding temperature leading Condition at location Poor ventilation, Dirt accumulation, Exposure to direct sunlight Though, above mentioned abnormalities may prevail for short or long duration or may be transient in nature, major impact of the listed abnormal conditions is overheating of the motor along with one or several of the other effects as follows. Change in the motor performance characteristics like drawl of more power and consequent deterioration in motor efficiency, etc. Though, above mentioned abnormalities may prevail for short or long duration or may be transient in nature, major impact of the listed abnormal conditions is overheating of the motor along with one or several of the other effects as follows. maximum torque that the motor can produce when operating without stalling. This is a critical design factor in motor applica- tions,particularly for the motors sub- to: 5. The breakdown torque, which is the Premature failure of stator or rotor insulation (For wound rotor motor) Increased fire hazard ,Breakage of jected to occasional extreme load conditions. Another critical factor is the locked. rotor bar and/or end ring (For squir- 2. Electrical limitation due to insulation provided rel cage motors) All the motors en- on the motor windings counter few or several of these ab- load on the motor can be imposed till normalities during the course of the winding insulation is able to their service lives. Consideration of withstand the prescribed temperature listed abnormal conditions at design rise over an ambient for that particu- stage greatly helps to minimise lar class of insulation. Life of the the effects of abnormal condi- motor greatly depends on the tem- tions to maintain a consistent per- perature rise of the windings. Antici- formance. pated life-span of the motor can be The electrical Considerations achieved provided it is operated at Design Following are the most important design factors required to be considered when selecting a motor for any of the diversified industrial applica- its rated output without overloading and the prescribed preventive maintenance practices are religiously followed. Speed of the Motor Most of the motors are directly cou- tions. Change in the motor performance charac- Output in teristics like drawl of more power and There are two principle limitations consequent deterioration in motor effi- for selecting the motor output: ciency, etc. Increase in mechanical 1. Mechanical limitation stresses 16 kW/HP pled with the driven equip- ment where in the speed of the motor and the driven equipment will be same.In order to meet the speed of the driven equipment, 17 like gearboxchains orbelts are in- than that of overvoltage. The higher troduced between motor and driv- torque,resulting from overvoltage, can en equipment. In this case, it may handle a little overload without undue be necessary to provide the rotor heating of the winding, but only for a shaft suitable for its attachment short duration. Continuous operation with the speed decreasing or in- with undervoltage condition increases creasing device and hence the the current at the rate of about 20% for specification should include such every 5% reduction in the supply volt- specific age, requirement. In case increasing the rated copper a variable speed drive is to be used loss.This for the speed variation, the motor to heating and prolonged temperature should be compatible for this spe- rise, and finally the burning of wind- cific application. The standard mo- ing. During a motor start-up, the torque tor may not provide desired per- reduces by 10% for each 5% reduction formance when operated via varia- in the supply voltage, causing more ble speed drive. starting current and consequently more Power Supply Voltage and Frequency Varia- rapid heating of the winding. The motor tions: Varia- offers reduced efficiency at either over- tions in the power supply parame- voltage or undervoltage. Power factor ters, i.e. voltage and frequency drops sharply with higher voltage and significantly affect overall perfor- improves with lower voltage. Even mance of the motor. As provided when motor is lightly loaded, over - in IS:325-1996, the permissible voltage cause rise in current and tem- voltage to perature thus reducing the life of mo- permissible frequency is tor. The variation in frequency by +5 50Hz ± 3%, and permissible com- % decreases the torque by about 10% bined variation is ±6 %.The effect and vice-versa at – 5% frequency, the of undervoltage is more serious torque increases by about 10%.It is, ±10%, variation is ±5 results in- therefore, of utmost importance to consider the combined effect of variation in voltage and frequency both when purchasing the motor. Unbalance in the supply voltage results into a current unbalance of 6 to 10 times the percentage voltage unbalance. This in turn results into generation of negative sequence currents in the rotor causing its overheating and premature failure. It is therefore vital to specify the permissible limits of variations in the power supply parameters for the motor in accordance with the requirement of the driven equipment. However, the permissible limits should never be more than provided in the applicable Indian Standard IS:3251996 . - R.TAMIL VANAN(SECOND EEE) 17 18 VALIDICTORY FUNCTION FOR AVERA 2014-2015 18 19 ANNUAL REPORT(2014-2015) Sno Date Particulars Chief guest Participants Place 1 25-07-2014 Inaugural Function and Guest Lecture on ―Recent Trends in Electric Drives‖ Er.N.Arulprakash Product Engineer‘ M/s Supreme Scientific Corporation of India, Madurai II,III,IV year Students CS Hall 2 21-08-2014 Technical Quiz - III Year Students Electrical Seminar Hall 3 16-10-2014 Workshop on ‖Programming of PIC Microcontroller using CCS Compiler‖ Mr.R.Muthu Bharathi, Mr.C.Kannan Assitant Professors, EEE Dept MCET III Year Students Simulation Lab 4 06-11-2014 Intra Department Paper Presentation - II and III year Students A-411 5 12-02-2015 Guest Lecture on ―Electric and Hybrid Vehicles‖ Mr.S.Karthick, Manager R&D, Amperes Vehicles India Pvt Ltd, Coimbatore II year Students Hall No-12 6 03-03-2015 Technical Quiz - II Year Students Electrical Seminar Hall 12-03-2015 Workshop on ―CMOS Design flow Using MICROWIND EDA Tool‖ Mr.O.Vignesh Professor/ECE, Anna University Regional Center, Coimbatore III Year Students Research Lab ECE,EEE.ICE, E&I students Electrical seminar Hall All EEE students CS hall 7 8 18.03.2015 Inter Department Paper Presentation 9 01.04.2015 Valedictory Dr.K.N.Vijeyakumar, Assoc.Prof,EEE Dept. Mr.T.GopalaKrishnan, AP(SS)/E&I Dept Mrs.C.Kalamani, AP(SS),ECE Dept Principal MCET 19 20 BRAIN TEASERS 1. Johnny‘s mother had three children. The first child was named April. The second child was named May. What was the third child‘s name? 2. A clerk at a butcher shop stands five feet ten inches tall and wears size 13 sneakers. What does he weigh? 3. Before Mt. Everest was discovered, what was the highest mountain in the world? 4. How much dirt is there in a hole that measures two feet by three feet by four feet? 5. What word in the English language is always spelled incorrectly? 6. Billie was born on December 28th, yet her birthday always falls in the summer. How is this possible? 7. In British Columbia you cannot take a picture of a man with a wooden leg. Why not? 8. If you were running a race and you passed the person in 2nd place, what place would you be in now? 9. Which is correct to say, ―The yolk of the egg is white‖ or ―The yolk of the egg are white?‖ 10. A farmer has five haystacks in one field and four haystacks in another. How many haystacks would he have if he combined them all in one field? Answers 1. Johnny. 2. Meat. 3. Mt. Everest. It just wasn‘t discovered yet. 4. There is no dirt in a hole. 5. Incorrectly (except when it is spelled incorrecktly). 6. Billie lives in the southern hemisphere. 7. You can‘t take a picture with a wooden leg. You need a camera (or iPad or cell phone) to take a picture. 8. You would be in 2nd place. You passed the person in second place, not first. 9. Neither. Egg yolks are yellow. 10. One. If he combines all his haystacks, they all become one big stack. 20 21 FUN QUESTIONS 1. Manoj Singh left on a horse on Thursday , was gone for two days, and came back on Thursday How did that happen? 2. A man has a barrel with filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel? 3. Jack tells Jill, "This isn't the $5 bill you left on the the table. I found it between pages 15 and 16 of Harry Potter." Jill retorts, "You're lying and I can prove it." How did Jill know? REBUS PUZZLES 1. 2. 3. ANS FOR FUN QUESTIONS: 1. Horse name was Thursday 2. A Hole 3. Harry Potter, like all other books, has odd-numbered pages on the right. Therefore, pages 15 and 16 are the front and back of a single page, and nothing could have been found between them. ANS FOR REBUS QUESTIONS: 1. No one to blame 2. Ready for anything 3. Space invaders 21 22 Congratulations!!! Abinaya M Ashish K Abirami.S Divya M Pavithra Ganesan Ganga Devi P Nithya Shree S Suriya Prakash P M Krishnakumar K Prajeetha N Venkatlakshmi V Gayathri M Jeeva Vetrivel R Archanaa M Umamaheswari R Karthiga S Karuppanakumar S Kousalya s Vignesh C Gayathri S Siddharthan B Vignesh Kumar M Arun Pandi G Manikandan K Vignesh L Vignesh S Vignesh L Bharathapriya K Umamaheshwari.R Sureka C Porkodi R Saravanaswamy S Nishapraba S Ragunathan J ARCHANAA.M Menaka T Muruganantham M 22 23 Mahalingam T Vijaya Kumar M Muthu Kumar T Kathiresan S Navaneetha Krishnan J Sundramoorthy G Pavithra Ganesan Kandasamy Priya Devi T Manoj Kumar R Qamaran Nouh Ibrahim Mohamed Ibrahim Esakki Siva.E Karthik.R Dhanaseker G Logeshwaran S Rajesh Khanna N Mohammed Wasim M Sowra K Nishanth. S Sree Varshini B Rammethun P K Vignesh M Visnuvarthan C Vignesh Raj S Jaganath S Santhoshkumar N Thangavel M Abinaya B Abirami S Anitha S Anjana R Aravind P L Manjunathan R Aravindhan V Abdul Basith A Archana Ambethkar Pranav A Arvind Kumar E Ashokkumar S Chelladurai L Nepoleon K Gayathri P Mathankumar T Gopiha V Manojkumar M Janani Priya S Prakash R Jegadiss R Ranjith Kumar S Karthik V Janarthanan A Keerthiprabha R Vignesh S Keerthiprasad P Anandaganesh N Lalith Prasad S Gowtham S Leema J Bharathvaj K Madhumathi S Balachandar N 23 24 EDITORIAL BOARD Dr.A.SENTHIL KUMAR (HOD-EEE) FACULTY ADVISORS Ms.J.AMUDHA Mr.M.SARAVANA KUMAR STUDENT CO-ORDINATORS S.Sarath S.Gayathri S.Suganthan S.Lavanyagowri D.V .Sandronvenkat E.Aloysius Richard Rozario 24